They're pricey!
Final Cut Studio $1,299 (comes with Final Cut Pro, Motion, DVD Studio Pro, and Soundtrack Pro) MAC ONLY!
After Effects - $999 for Professional $699 for Standard. PC AND MAC
Adobe Production Studio $1,699 for Professional $1,199 for Standard (comes with Premiere, After Effects, Photoshop, Audition, Illustrator and Encore) WINDOWS ONLY
Obviously these are professional applications and for simple video editing they are a bit overkill! But if you're looking to go into this field, it's a very good investment and pay for themselves after a couple of projects.
More consumer applications like Sony's Vegas or Pinnacle would work just as well. If you're on a MAC Final Cut Express is something to check out if iMovie is too amateur for you. Hope that answers your questions.
On a different note, unfortunately there will be no USC video from me this week. I was set to do one win or lose but the TV station constantly had weather advisories taking up about half the screen and I'm extremely busy work wise too. Expect a Troy video next week sometime all.
Cheers!